Messages in this thread Patch in this message |  | | From | Pavankumar Kondeti <> | Subject | [PATCH V3] PM / EM: Micro optimization in em_cpu_energy | Date | Mon, 23 Nov 2020 16:05:32 +0530 |
| |
When the sum of the utilization of CPUs in a performance domain is zero, return the energy as 0 without doing any computations.
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org> --- V3: %s/power/performance as corrected by Quentin V2: Fixed the function name in the commit message.
include/linux/energy_model.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h index b67a51c..8810f1f 100644 --- a/include/linux/energy_model.h +++ b/include/linux/energy_model.h @@ -103,6 +103,9 @@ static inline unsigned long em_cpu_energy(struct em_perf_domain *pd, struct em_perf_state *ps; int i, cpu; + if (!sum_util) + return 0; + /* * In order to predict the performance state, map the utilization of * the most utilized CPU of the performance domain to a requested -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
|  |